more windows build fixes

Change-Id: I57b361dea1ee6a5bfdc95ec3632bb42a5941b900
Reviewed-on: https://gerrit.libreoffice.org/34232Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>

writerperfect/qa/unit/wpftimport.cxx

@@ -19,7 +19,7 @@
 
 css::uno::Reference<css::io::XInputStream> createDummyInput()
 {
-    rtl::Reference<comphelper::SequenceInputStream> xDummyInput{new comphelper::SequenceInputStream({})};
+    rtl::Reference<comphelper::SequenceInputStream> xDummyInput(new comphelper::SequenceInputStream(css::uno::Sequence<sal_Int8>()));
     return xDummyInput.get();
 }